** Shares of Nufarm NUF.AX rise as much as 17.6% to A$2.61, their biggest intraday pct gain since February 3, 2022
** The Australian agribusiness firm sees first-half underlying operating earnings to be between A$239 million ($170.29 million) and A$244 million, up 17% from year-ago period at mid-point
** Company says it will target additional A$50 million in cost savings
** Shares hit their highest level since November 20, 2025
** YTD, Nufarm stock up 9.4%
($1 = 1.4035 Australian dollars)
(Reporting by Nichiket Sunil in Bengaluru)
((Nichiket.Sunil@thomsonreuters.com))